Xuehong Chen

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—Roots have important functions in the ecosystem. Therefore, establishing root-related parameters such as root size, biomass, and 3-D architecture is necessary. Traditional methods for measuring tree roots are labor intensive and destructive to nature , limiting quantitative and repeated assessments in long-term research. Ground-penetrating radar (GPR)(More)
—Vegetation-index-based spatial sharpening technologies were developed for improving the spatial resolution of thermal-infrared (TIR) images. Previous studies showed that the relationship between vegetation index and surface temperature is independent with spatial resolution. However, spatial extent is another scale factor which may affect the relationship(More)
As a nondestructive geophysical tool, Ground penetrating radar (GPR) has been applied in tree root study in recent years. With increasing amounts of GPR data collected for roots, it is imperative to develop an efficient automatic recognition of roots in GPR images. However, few works have been completed on this topic because of the complexity in root(More)